National Museum of Nuclear Science & History
Seymour Ratner was a staff worker at Los Alamos during the Manhattan Project.
L. J. Ritter worked for the Roane-Anderson Company.
Blanche J. Lawrence was an African-American research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Martha Jackson Ross studied history and English at Montevallo College for Women. She worked on the Manhattan Project at Oak Ridge.
